<span>the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock.</span>
Answer:
True.
Explanation:
Hermaphrodites may be defined as the organism that does not contain the separate sexes. Generally, invertebrates and lower vertebrates are hermaphrodites in the nature.
The male and female gametes are present inside the same organism. The eggs and ova are produced in the same body in case of the hermaphrodite animals.
Thus, the correct answer is option (a).
Answer:
Effective food supply was most likely an effect on society that resulted from improvements in blood handling during World War I and World War II.
Explanation:
The right answer is C
This process is called anaerobic respiration. It doesn't need dioxygen to occur (it can happen with or without O2).
Anaerobic respiration is a mechanism in which electrons pass through a chain of transporters whose final acceptor is a mineral substance other than oxygen, unlike aerobic respiration where the final acceptor is dioxygen. The final acceptor may be the nitrate ion (as in the case of Pseudomonas), carbon dioxyde or the sulfate ion.
Some bacteria (Pseudomonas) are able, anaerobically, to reduce nitrates to nitrites and then, depending on the case, to dinitrogen (with the enzyme Nitrate reductase A).
NO3- ==> NO2- ==> N2.
